Home / 25,656.16-35,406.48-21,177.76

Finding the Fourth Proportional to 25,656.16, 35,406.48 and 21,177.76

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Solution

The fourth proportional to 25,656.16, 35,406.48 and 21,177.76 is: 29,226.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,656.16 : 35,406.48 = 21,177.76 : x
  2. Step 2: Convert to fraction form
    25,656.16/35,406.48 = 21,177.76/x
  3. Step 3: Cross multiply
    25,656.16x = 35,406.48 × 21,177.76
  4. Step 4: Simplify right side
    25,656.16x = 749,829,935.88
  5. Step 5: Solve for x
    x = 749,829,935.88/25,656.16
  6. Step 6: Final answer
    x = 29,226.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.